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#pragma once
#include <cstddef>
template <typename T>
struct Column
{
Column(T default_value):
value{default_value} {}
Column():
value{} {}
using real_type = T;
T value{};
};
struct ForeignKey: Column<std::size_t> {
static constexpr auto name = "fk_";
};
struct Id: Column<std::size_t> {
static constexpr std::size_t unset_value = static_cast<std::size_t>(-1);
static constexpr auto name = "id_";
static constexpr auto options = "PRIMARY KEY";
Id(): Column<std::size_t>(unset_value) {}
};